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FUEL SYSTEM PRODUCTS AND ACCESSORIES

The Fast Lane modified 12-803 Regulator utilizes some old NHRA Pro Stock technology. The body is ported so the seat opens quicker (very important in progressive controller applications) and it reduces foam. Flow bench tested through their 2.5 to 16-PSI range to produce a consistent fuel delivery. The spring and spring rate is changed to get rid of harmonics that happens at certain rates of flow on production regulators. This regulator will flow over 600 PPH of fuel at 6 psi. Data loggers have proven this regulator offers more stable fuel pressure throughout the run.. Set it and forget it.

Modified Holley 12-803 Regulator

$85.00
Add to Cart
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Fast Lane N20 Spring (left) vs Stock Holley (right)

PN 12807 FAST LANE MODIFIED REGULATOR DIAPHRAGM REPAIR KIT (with high-pressure spring)

$30.00
Add to Cart

2.5 to 16+ PSI High-pressure spring

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Stock Holley (top) vs  Fast Lane N20 modified version (bottom)

Modify customer supplied 12-803 Holley Regulator

$55.00
Add to Cart

Labor and shipping

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PN 8000 PRO-SERIES 4.5" 0-15 PSI +/- .02% ACCURACY CALIBRATED FLOW TOOL  

This is the most accurate Flow Tool on the market. Utilizes a .073-inch orifice restriction. This bottom exit design is much easier to use. It allows you to keep the gauge upright for easier reading, while the fuel sprays out the bottom into a gas can or a front mounted fuel cell. The gauge has a stainless steel connection and internals. +/- .02% ACCURACY- Flow Bench Calibrated. Includes a stainless steel inline shut off valve for safety.


pro_series_flow_tool_instructions.doc
File Size: 119 kb
File Type: doc
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PN 8000 PRO-SERIES 4.5" 0-15 PSI +/- .02% ACCURACY CALIBRATED FLOW TOOL

$245.00
Add to Cart

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Replacement Pro-Series 0-15 PSI Gauge 

Replacement Pro-Series 0-15 PSI Gauge

$150.00
Add to Cart

    Contact for questions or for more information:

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Copyright © 2025 FASTLANE Nitrous Racing Systems
Tyler, TX  75707
  • Home
  • Direct Port Systems
  • Plate Systems
  • Flow Testing
  • Ambush Plate System
  • Fuel Management Products
  • Racing Solenoid Valves
  • Pinned flare jets and High Flow Jets
  • Spark Plug Reading Tool
  • Nitrous bottles & parts
  • Plumbing Services, Nozzles & Bungs
  • Percentage Change Calculator
  • Multi-Stage Direct Port and Pro Outlaw 632
  • DXP STREET PLATE
  • Fast Lane T-Shirts & License Plate's
  • Video's
    • The Purge >
      • Contact
    • Downloads
    • Terms and Conditions of Sale